feat: task file manage (#196)

1. support view task file list
2. support share file on android and iOS

ui/flutter/lib/app/modules/setting/views/setting_view.dart

@@ -334,13 +334,15 @@ class SettingView extends GetView<SettingController> {
             width: 150,
             child: DropdownButtonFormField<String>(
               value: startCfg.value.network,
-              onChanged: (value) async {
-                startCfg.update((val) {
-                  val!.network = value!;
-                });
+              onChanged: Util.isDesktop()
+                  ? (value) async {
+                      startCfg.update((val) {
+                        val!.network = value!;
+                      });
 
-                await debounceSave(needRestart: true);
-              },
+                      await debounceSave(needRestart: true);
+                    }
+                  : null,
               items: [
                 const DropdownMenuItem<String>(
                   value: 'tcp',

ui/flutter/lib/app/modules/task/bindings/task_files_binding.dart

@@ -0,0 +1,12 @@
+import 'package:get/get.dart';
+
+import '../controllers/task_files_controller.dart';
+
+class TaskFilesBinding extends Bindings {
+  @override
+  void dependencies() {
+    Get.lazyPut<TaskFilesController>(
+      () => TaskFilesController(),
+    );
+  }
+}

ui/flutter/lib/app/modules/task/controllers/task_files_controller.dart

@@ -0,0 +1,86 @@
+import 'package:get/get.dart';
+import '../../../../api/api.dart';
+import '../../../../api/model/resource.dart';
+import '../../../../api/model/task.dart';
+
+class FileItem {
+  final bool isDirectory;
+  final String path;
+  final String name;
+  final int size;
+
+  FileItem(this.isDirectory, this.path, this.name, this.size);
+
+  String get fullPath => "${path == "/" ? path : "$path/"}$name";
+}
+
+class TaskFilesController extends GetxController {
+  final Map<String, List<FileItem>> _dirMap = {};
+
+  final task = Rx<Task?>(null);
+  final fileList = <FileItem>[].obs;
+
+  @override
+  void onInit() async {
+    super.onInit();
+
+    final taskId = Get.rootDelegate.parameters['id'];
+    final tasks = await getTasks([]);
+    task.value = tasks.firstWhere((element) => element.id == taskId);
+    parseDirMap(task.value!.meta.res.files);
+    toDir("/");
+  }
+
+  void parseDirMap(List<FileInfo> fileList) {
+    for (final file in fileList) {
+      String dir = file.path;
+      if (!dir.startsWith("/")) {
+        dir = "/$dir";
+      }
+      if (!_dirMap.containsKey(dir)) {
+        _dirMap[dir] = [];
+      }
+
+      _dirMap[dir]!.add(FileItem(false, dir, file.name, file.size));
+
+      void findParent(String dir) {
+        final parentDirIndex = dir.lastIndexOf("/");
+        String parentDir =
+            parentDirIndex == 0 ? "/" : dir.substring(0, parentDirIndex);
+        if (!_dirMap.containsKey(parentDir)) {
+          _dirMap[parentDir] = [];
+        }
+        String dirName = dir.substring(dir.lastIndexOf("/") + 1);
+        if (!_dirMap[parentDir]!.any((element) => element.name == dirName)) {
+          _dirMap[parentDir]!.add(FileItem(true, parentDir, dirName, 0));
+        }
+      }
+
+      while (dir != "/" && dir != "") {
+        findParent(dir);
+        dir = dir.substring(0, dir.lastIndexOf("/"));
+      }
+    }
+
+    // sort children, directories first then files, alphabetically
+    _dirMap.forEach((key, value) {
+      value.sort((a, b) {
+        if (a.isDirectory && !b.isDirectory) {
+          return -1;
+        } else if (!a.isDirectory && b.isDirectory) {
+          return 1;
+        } else {
+          return a.name.compareTo(b.name);
+        }
+      });
+    });
+  }
+
+  void toDir(String dir) {
+    fileList.value = _dirMap[dir]?.toList() ?? [];
+  }
+
+  int dirItemCount(String dir) {
+    return _dirMap[dir]?.length ?? 0;
+  }
+}

ui/flutter/lib/app/modules/task/views/task_files_view.dart

@@ -0,0 +1,92 @@
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:share_plus/share_plus.dart';
+
+import '../../../../util/file_icon.dart';
+import '../../../../util/icons.dart';
+import '../../../../util/util.dart';
+import '../../../views/breadcrumb_view.dart';
+import '../controllers/task_files_controller.dart';
+
+class TaskFilesView extends GetView<TaskFilesController> {
+  const TaskFilesView({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+        appBar: AppBar(
+          leading: IconButton(
+              icon: const Icon(Icons.arrow_back),
+              onPressed: () => Get.rootDelegate.popRoute()),
+          // actions: [],
+          title: Obx(() => Text(controller.task.value?.meta.res.name ?? "")),
+        ),
+        body: Obx(() {
+          final fileList = controller.fileList;
+          final breadcrumbItems = ["/"];
+          if (fileList.isNotEmpty) {
+            final file = fileList.first;
+            final path = file.path.substring(1);
+            if (path.isNotEmpty) {
+              final pathArr = path.split("/");
+              for (int i = 0; i < pathArr.length; i++) {
+                breadcrumbItems.add(pathArr[i]);
+              }
+            }
+          }
+          return Column(
+            children: [
+              Breadcrumb(
+                  items: breadcrumbItems,
+                  onItemTap: (index) {
+                    final targetDirArr = <String>[];
+                    for (int i = 0; i <= index; i++) {
+                      targetDirArr.add(breadcrumbItems[i]);
+                    }
+                    controller
+                        .toDir(targetDirArr.join("/").replaceFirst('//', '/'));
+                  }).paddingOnly(left: 16, top: 16, bottom: 8),
+              Expanded(
+                child: ListView.builder(
+                  itemBuilder: (context, index) {
+                    final meta = controller.task.value!.meta;
+                    final file = fileList[index];
+                    return ListTile(
+                      leading: file.isDirectory
+                          ? const Icon(Icons.folder)
+                          : Icon(FaIcons.allIcons[findIcon(file.name)]),
+                      title: Text(fileList[index].name),
+                      subtitle: file.isDirectory
+                          ? Text('items'.trParams({
+                              'count': controller
+                                  .dirItemCount(file.fullPath)
+                                  .toString()
+                            }))
+                          : Text(Util.fmtByte(file.size)),
+                      trailing: file.isDirectory
+                          ? null
+                          : IconButton(
+                              icon: const Icon(Icons.share),
+                              onPressed: () {
+                                final xfile = XFile(Util.safePathJoin([
+                                  meta.opts.path,
+                                  meta.res.rootDir,
+                                  file.fullPath
+                                ]));
+                                Share.shareXFiles([xfile]);
+                              }),
+                      onTap: () {
+                        if (file.isDirectory) {
+                          controller.toDir(file.fullPath);
+                        }
+                      },
+                    );
+                  },
+                  itemCount: controller.fileList.length,
+                ),
+              )
+            ],
+          );
+        }));
+  }
+}